Can't get the model weighted, all faces are red painted
For a reason or another the Deform option of most of your bones is deactivate, which gives them zero weight on the mesh, so reactive it for all bones that are supposed to have weight (and deactivate it for the master, the IK controllers, pole targets...).

To toggle several undeformed bones at once, as explained here by  Jaroslav Jerryno Novotny, you can select multiple bones, at last select one with the Deform activated, then right-click the Deform checkbox and Copy To Selected.